1634425401 has 8 divisors (see below), whose sum is σ = 2490553024. Its totient is φ = 933957360.

The previous prime is 1634425393. The next prime is 1634425411. The reversal of 1634425401 is 1045244361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1634425401 - 2³ = 1634425393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634425411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38914870 + ... + 38914911.

It is an arithmetic number, because the mean of its divisors is an integer number (311319128).

Almost surely, 2^1634425401 is an apocalyptic number.

It is an amenable number.

1634425401 is a deficient number, since it is larger than the sum of its proper divisors (856127623).

1634425401 is an equidigital number, since it uses as much as digits as its factorization.

1634425401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77829791.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1634425401 is about 40428.0274191062. The cubic root of 1634425401 is about 1177.9360167811.

Adding to 1634425401 its reverse (1045244361), we get a palindrome (2679669762).

The spelling of 1634425401 in words is "one billion, six hundred thirty-four million, four hundred twenty-five thousand, four hundred one".